diff --git a/src/Parser/TypeAPI.php b/src/Parser/TypeAPI.php
index fe020a3..22985e0 100644
--- a/src/Parser/TypeAPI.php
+++ b/src/Parser/TypeAPI.php
@@ -263,7 +263,7 @@ private function parseResponse(\stdClass $data): Operation\Response
         }
 
         $contentType = $data->contentType ?? null;
-        if (is_string($contentType)) {
+        if (is_string($contentType) && !empty($contentType)) {
             $type = ContentType::from($contentType);
         } else {
             $schema = $data->schema ?? null;